Search results for: f ennistyka

• Organon F

  Journals

  ISSN: 1335-0668

• THREE-LEVEL F-TYPE INVERTER

  Publication

  • C. Odeh
  • A. Lewicki
  • M. Morawiec
  • D. Kondratenko

  - IEEE TRANSACTIONS ON POWER ELECTRONICS - Year 2021

  Given the recent available IGBT switch modules up to 6.5 kV, 1200 A rating, the prospect of the diode-free variant topology of the three-level neutral-point-clamped (3-level, T-type) inverter in certain medium voltage applications is bright; due to its small part count and low conduction losses compared to the diode-clamped NPC inverter. However, within this voltage range, the input dc voltage rating of 50% of the switches per...

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• Dynamic F-free Coloring of Graphs

  Publication

  • P. Borowiecki
  • E. Sidorowicz

  - GRAPHS AND COMBINATORICS - Year 2018

  A problem of graph F-free coloring consists in partitioning the vertex set of a graph such that none of the resulting sets induces a graph containing a fixed graph F as an induced subgraph. In this paper we consider dynamic F-free coloring in which, similarly as in online coloring, the graph to be colored is not known in advance; it is gradually revealed to the coloring algorithm that has to color each vertex upon request as well...

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• Polska fennistyka. Bibliografia dorobku. Wybór z lat 1824–2021 (książka)

  Publication

  • K. Wojan

  - Year 2021

• S&F-Scienzaefilosofia it

  Journals

  ISSN: 2036-2927

• F and S Science

  Journals

  eISSN: 2666-335X

• F and S Reports

  Journals

  eISSN: 2666-3341

• F and S Reviews

  Journals

  eISSN: 2666-5719

• Selective detection of F- by chromogenic tetrazole receptor

  Publication

  • A. Pazik
  • A. Skwierawska

  - SUPRAMOLECULAR CHEMISTRY - Year 2013

  A chromogenic anion host 4, containing two amide functionalities linked to azo dye and tetrazole rings was synthesized and its complexes with various anions were investigated. The results show that receptor 4 can recognize selectively biologically important F- ion. The binding affinity for F- was investigated by naked-eye colour change, UV-Vis and 1H NMR spectroscopy. Addition F- ion in CH3CN and DMSO to receptor 4 cause a colour...

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• Badanie wybranych właściwości wyłączników różnicowoprądowych typu F

  Publication

  • S. Czapp
  • H. Tariq
  • K. Borowski

  - Przegląd Elektrotechniczny - Year 2024

  W instalacjach elektrycznych niskiego napięcia instaluje się coraz więcej przekształtników energoelektronicznych (systemy fotowoltaiczne, instalacje ładowania pojazdów elektrycznych, układy napędowe o regulowanej prędkości obrotowej silnika), a mają one wpływ na dobór typu wyzwalania wyłączników różnicowoprądowych (AC, A, F lub B). W obwodach, w których pojawia się prąd różnicowy zawierający składowe o częstotliwości innej niż...

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